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Author: Jas Dhaliwal

Jas Dhaliwal is a highly experienced International Social Media Strategist. He specializes in building and engaging with social communities across the web. Born and bred in London, he is passionate about technology and social anthropology. You can follow @Jas on Twitter
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Would this also apply if wanting to change from Windows 7 Ultimate to Windows 7 Enterprise? The reason I ask is my company has volume licensing and requires me to load their software, I have Windows 7 Ultimate and don't really want to format and reinstall.

Nice tip! – just to let u know (and byronbranfield) that I just did it in reverse and it worked like a treat. I loaded Ultimate by mistake when I had an enterprise key. Made those two changes to the registry and upgraded from the DVD (without rebooting). All sweet!

Thanks for the tip.

byronbranfield

Awesome thanks mate, this is exactly what I need to do.

byronbranfield

hmmm, this is wierd. I tried it and got an error saying that I cant upgrade from Windows 7 Ultimate to Windows 7 Enterprise and a reinstall needs to be performed (Not an option). I chenged the registry as stated. Any ideas?

I would try a reboot. But I don't think you can upgrade from Ultimate to Enterprise.Though you can test the scenario by using a virtual machine.

byronbranfield

I get what you saying, I tried replacing the keys with Windows 7 Enterprise and EditionID to Enterprise and the upgrade takes place but back to Enterprise lol. My question is if you can upgrade from Basic to Enterprise so effectively I would replace the keys with Basic and then upgrade to Enterprise?

brettmonten

Did you try custom or standard? I just used the standard and left it to do its thang.

brettmonten

I've struck a snag with this reverse upgrade – something hasn't been done. Although I'm Enterprise for all intents and purposes, I'm now being told that Windows can't be activated cos the KMS host can't be activated. That's an Ultimate thing isn't it?Any clues?

I also tried the cversion.ini hack, with no luck. Any other ideas ? And yes, I'm trying to upgrade my Enterprise 7 x64 to Ultimate 7 x64 if you doubt it.

jacquesflamant

Alright here how it worked for me :

Do the trick as mentionned above, but don't launch or auto-launch the setup, first explore the DVD folder, right clic on “Setup.exe”, and go to the compatibility tab :Make it compatible with Windows Vista SP2.

Vista 7 Business”Change the key: EditionID from “Enterprise” to “Business”Do not restart

Step4:Browse Windows 7 Ultimate DVD for setup.exeRight click on propertiesSelect Compatibility tab and make compatible with Windows Vista SP2Double click on setup.exe and do the internet updates.Select upgrade to ultimate only.

A little extra step I needed to do before this would work was completely uninstall any virus protection. I tried to kill the process but I needed to uninstall it completely and reboot (making sure I changed back to Enterprise and Windows 7 Enterprise in the registry before reboot). Finally figured that out after 25 tries.

All versions of Windows 7 requires product activation. Windows 7 Enterprise can only be activated with a Volume License Key KMS or MAK if not active against a local KMS server. VL Enterprise requires a KMS / MAK activation box or against a local KMS server. Can be reset to 3 times.Windows 7 Ultimate Edition conventionally active on the Internet to the Microsoft activation servers.